Sunflower seed oil is an important vegetable oil, mainly produced in Russia, Canada, Argentina, and the United States. Oleic acid is a monovalent unsaturated fatty acid, which has higher oxidative stability than multivalent unsaturated fatty acids such as oleic acid and linolenic acid. Oleic acid has the effect of reducing blood lipid levels and preventing cardiovascular disease in patients with hyperlipidemia. It can lower serum total cholesterol and low-density lipoprotein cholesterol, while maintaining high-density lipoprotein cholesterol levels. Therefore, vegetable oils with high oleic acid content are considered healthy, stable, and high-quality edible oils....